From the view of environment and easy availability, to develop the most efficient manganese oxide for peroxymonosulfate (PMS) activation is of great importance for the degradation of recalcitrant organic pollutants. In this study, biogenic manganese oxide (BioMnO_x) exhibited an unprecedented efficiency than the most efficient 3D α-Mn₂O₃ prepared by chemical method. 100% of phenol degradation at 40 min and 99.4% of tetracycline removal at 60 min were achieved over BioMnO_x with PMS, which was 3-fold faster than 3D α-Mn₂O₃. BioMnO_x also has an excellent long-term stability and good performance toward the pollutants degradation at a wide pH range of 3.0–9.0. Most importantly, ¹O₂ was identified as the primary reactive species in BioMnO_x/PMS system based on the trapping experiment and EPR analysis. The PMS activation over BioMnO_x should follow a self-decomposition and energy quenching mechanism instead of electron transfer process as confirmed by the XPS analysis. Finally, the degradation pathways of tetracycline and phenol by ¹O₂ over BioMnO_x were proposed according to HPLC and HPLC-MS results, which are greatly different from that by OH oxidation in the literature.

从环境和易于获得的角度来看，开发用于过氧化单硫酸盐（PMS）活化的最有效的锰氧化物对于降解难降解的有机污染物具有重要意义。在这项研究中，生物氧化锰（BioMnO _X）表现出比最高效的3Dα-Mn系前所未有的效率₂ ö ₃通过化学方法制备。在40分钟，并去除四环素在60分钟以上BioMnO分别实现99.4％的苯酚降解100％_X与PMS，为3倍3Dα-Mn系快₂ ö ₃。BioMnO _X在3.0-9.0的宽pH范围内，它还具有出色的长期稳定性和对污染物降解的良好性能。最重要的是，根据捕获实验和EPR分析，确定了¹ O ₂是BioMnO _x / PMS系统中的主要反应物种。BioMnO _x上的PMS活化应遵循自分解和能量猝灭机制，而不是XPS分析所证实的电子转移过程。最后，根据HPLC和HPLC-MS结果，提出了¹ O ₂在BioMnO _x上四环素和苯酚的降解途径，这与文献中的OH氧化方法有很大的不同。